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Minimum Thickness Minimum Thickness |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Washers
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SAE Washers
SAE washers generally have a smaller ID and OD than USS washers.
Zinc-plated, zinc yellow-chromate plated, and chrome-plated steel washers are corrosion resistant in wet environments.
Black ultra-corrosion-resistant coated and zinc-aluminum coated steel washers resist chemicals and withstand 1,000 hours of salt spray.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 4 | 0.125" | 0.312" | 0.028"-0.036" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 100 | 000000000 | 00000 |
| No. 6 | 0.156" | 0.375" | 0.036"-0.045" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 100 | 000000000 | 0000 |
| No. 8 | 0.188" | 0.438" | 0.036"-0.065" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 100 | 000000000 | 00000 |
| No. 10 | 0.220" | 0.500" | 0.036"-0.065" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 100 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.051"-0.080" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 100 | 000000000 | 00000 |
| 5/16" | 0.344" | 0.688" | 0.051"-0.080" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 50 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.812" | 0.051"-0.080" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 50 | 000000000 | 00000 |
| 7/16" | 0.469" | 0.922" | 0.051"-0.080" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 25 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.062" | 0.074"-0.121" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 25 | 000000000 | 00000 |
| 9/16" | 0.594" | 1.156" | 0.074"-0.121" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 25 | 000000000 | 00000 |
| 3/4" | 0.812" | 1.469" | 0.108"-0.160" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 20 | 000000000 | 00000 |
| 7/8" | 0.938" | 1.750" | 0.108"-0.160" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1" | 1.062" | 2.000" | 0.108"-0.160" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1 1/8" | 1.250" | 2.250" | 0.108"-0.160" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1 1/4" | 1.375" | 2.500" | 0.136"-0.192" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1 3/8" | 1.500" | 2.750" | 0.136"-0.192" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1 1/2" | 1.625" | 3.000" | 0.136"-0.192" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1 5/8" | 1.750" | 3.750" | 0.153"-0.213" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 7/8" | 2.000" | 4.250" | 0.153"-0.213" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 1 | 000000000 | 00000 |
Zinc-Aluminum Coated Grade 8 Steel | ||||||||
| No. 6 | 0.158" | 0.380" | 0.036"-0.065" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 10 | 000000000 | 0000 |
| No. 8 | 0.190" | 0.443" | 0.036"-0.065" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 10 | 000000000 | 0000 |
| No. 10 | 0.221" | 0.505" | 0.036"-0.065" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 10 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.055"-0.065" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 100 | 000000000 | 00000 |
| 5/16" | 0.344" | 0.688" | 0.055"-0.065" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 50 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.812" | 0.055"-0.065" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 50 | 000000000 | 00000 |
| 7/16" | 0.469" | 0.922" | 0.055"-0.065" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 25 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.062" | 0.097"-0.177" | Rockwell C38 | SAE Standards | 25 | 000000000 | 00000 |
| 9/16" | 0.599" | 1.168" | 0.074"-0.121" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 5 | 000000000 | 0000 |
| 5/8" | 0.688" | 1.312" | 0.122"-0.177" | Rockwell C38 | SAE Standards | 25 | 000000000 | 00000 |
| 3/4" | 0.812" | 1.469" | 0.122"-0.177" | Rockwell C38 | SAE Standards | 20 | 000000000 | 00000 |
| 7/8" | 0.950" | 1.762" | 0.136"-0.177" | Rockwell C38 | SAE Standards | 1 | 000000000 | 0000 |
| 1" | 1.074" | 2.012" | 0.136"-0.177" | Rockwell C38 | SAE Standards | 1 | 000000000 | 0000 |
| 1 1/8" | 1.262" | 2.243" | 0.146"-0.177" | Rockwell C38 | SAE Standards | 1 | 000000000 | 0000 |
| 1 1/4" | 1.387" | 2.512" | 0.136"-0.177" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/2" | 1.637" | 3.012" | 0.136"-0.177" | Rockwell C38 | SAE Standards; ASME B18.21.1 | 1 | 000000000 | 00000 |
General Purpose Washers
Zinc yellow-chromate and chrome-plated steel washers are corrosion resistant in wet environments.
Black ultra-corrosion-resistant coated steel washers resist chemicals and withstand 1,000 hours of salt spray.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 5/8" | 0.656" | 1.312" | 0.122"-0.146" | Rockwell C38 | __ | 25 | 000000000 | 000000 |
| 1 3/4" | 1.875" | 3.375" | 0.178"-0.196" | Rockwell C38 | __ | 5 | 000000000 | 00000 |
| 2" | 2.125" | 3.750" | 0.178"-0.196" | Rockwell C38 | __ | 1 | 000000000 | 0000 |
| 2 1/4" | 2.375" | 4.750" | 0.193"-0.248" | Rockwell C38 | ASME B18.21.1, USS Standards | 1 | 000000000 | 00000 |
| 2 1/2" | 2.625" | 5.000" | 0.210"-0.280" | Rockwell C38 | ASME B18.21.1, USS Standards | 1 | 000000000 | 00000 |
| 2 3/4" | 2.875" | 5.250" | 0.228"-0.320" | Rockwell C38 | USS Standards | 1 | 000000000 | 00000 |
| 3" | 3.125" | 5.500" | 0.249"-0.327" | Rockwell C38 | ASME B18.21.1, USS Standards | 1 | 000000000 | 00000 |
Black Ultra-Corrosion-Resistant Coated Grade 8 Steel | ||||||||
| 1/4" | 0.312" | 0.750" | 0.055"-0.072" | Rockwell C38 | USS Standards | 10 | 000000000 | 00000 |
| 5/16" | 0.375" | 0.875" | 0.064"-0.080" | Rockwell C38 | ASME B18.21.1, USS Standards | 10 | 000000000 | 00000 |
| 3/8" | 0.438" | 1.000" | 0.064"-0.080" | Rockwell C38 | ASME B18.21.1, USS Standards | 5 | 000000000 | 0000 |
| 7/16" | 0.500" | 1.250" | 0.064"-0.080" | Rockwell C38 | ASME B18.21.1, USS Standards | 5 | 000000000 | 0000 |
| 1/2" | 0.562" | 1.375" | 0.097"-0.121" | Rockwell C38 | ASME B18.21.1, USS Standards | 5 | 000000000 | 00000 |
| 9/16" | 0.625" | 1.500" | 0.097"-0.121" | Rockwell C38 | USS Standards | 5 | 000000000 | 00000 |
| 5/8" | 0.688" | 1.750" | 0.122"-0.146" | Rockwell C38 | ASME B18.21.1, USS Standards | 1 | 000000000 | 0000 |
| 3/4" | 0.812" | 2.000" | 0.122"-0.146" | Rockwell C38 | ASME B18.21.1, USS Standards | 1 | 000000000 | 0000 |
| 7/8" | 0.938" | 2.250" | 0.136"-0.160" | Rockwell C38 | ASME B18.21.1, USS Standards | 1 | 000000000 | 0000 |
| 1" | 1.062" | 2.500" | 0.136"-0.160" | Rockwell C38 | ASME B18.21.1, USS Standards | 1 | 000000000 | 0000 |
| 1 1/8" | 1.250" | 2.750" | 0.136"-0.160" | Rockwell C38 | ASME B18.21.1, USS Standards | 1 | 000000000 | 0000 |
| 1 1/4" | 1.375" | 3.000" | 0.136"-0.160" | Rockwell C38 | ASME B18.21.1, USS Standards | 1 | 000000000 | 0000 |
| 1 3/8" | 1.500" | 3.250" | 0.136"-0.160" | Rockwell C38 | USS Standards | 1 | 000000000 | 00000 |
| 1 1/2" | 1.625" | 3.500" | 0.136"-0.160" | Rockwell C38 | USS Standards | 1 | 000000000 | 00000 |
Oversized Washers
Compared to our general purpose washers, these have exaggerated diameters and/or thicknesses for covering oversized holes or for use as spacers and levelers.
Zinc- and zinc yellow-chromate plated steel washers are corrosion resistant in wet environments.
Black ultra-corrosion-resistant coated steel washers resist chemicals and withstand 1,000 hours of salt spray. They’re also known as black luster washers.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 0.312" | 0.734" | 0.051"-0.080" | Rockwell C38 | ASME B18.21.1; USS Standards | 100 | 000000000 | 000000 |
| 5/16" | 0.375" | 0.875" | 0.064"-0.104" | Rockwell C38 | ASME B18.21.1; USS Standards | 50 | 000000000 | 00000 |
| 3/8" | 0.438" | 1.000" | 0.064"-0.104" | Rockwell C38 | ASME B18.21.1; USS Standards | 50 | 000000000 | 00000 |
| 7/16" | 0.500" | 1.250" | 0.064"-0.104" | Rockwell C38 | ASME B18.21.1; USS Standards | 25 | 000000000 | 00000 |
| 1/2" | 0.562" | 1.375" | 0.086"-0.132" | Rockwell C38 | ASME B18.21.1; USS Standards | 25 | 000000000 | 00000 |
| 9/16" | 0.625" | 1.469" | 0.086"-0.132" | Rockwell C38 | ASME B18.21.1; USS Standards | 25 | 000000000 | 00000 |
| 5/8" | 0.688" | 1.750" | 0.108"-0.160" | Rockwell C38 | ASME B18.21.1; USS Standards | 25 | 000000000 | 00000 |
| 3/4" | 0.812" | 2.000" | 0.122"-0.177" | Rockwell C38 | ASME B18.21.1; USS Standards | 10 | 000000000 | 00000 |
| 7/8" | 0.938" | 2.250" | 0.136"-0.192" | Rockwell C38 | ASME B18.21.1; USS Standards | 10 | 000000000 | 00000 |
| 1" | 1.062" | 2.500" | 0.136"-0.192" | Rockwell C38 | ASME B18.21.1; USS Standards | 5 | 000000000 | 00000 |
| 1 1/8" | 1.250" | 2.750" | 0.136"-0.192" | Rockwell C38 | ASME B18.21.1; USS Standards | 5 | 000000000 | 00000 |
| 1 1/4" | 1.375" | 3.000" | 0.136"-0.192" | Rockwell C38 | ASME B18.21.1; USS Standards | 5 | 000000000 | 00000 |
| 1 3/8" | 1.500" | 3.250" | 0.136"-0.160" | Rockwell C38 | USS Standards | 1 | 000000000 | 0000 |
| 1 1/2" | 1.625" | 3.500" | 0.136"-0.160" | Rockwell C38 | USS Standards | 1 | 000000000 | 0000 |
Black Ultra-Corrosion-Resistant Coated Steel | ||||||||
| 1/4" | 0.313" | 0.750" | 0.090"-0.110" | Rockwell C38 | USS Standards | 5 | 000000000 | 0000 |
| 5/16" | 0.375" | 0.875" | 0.090"-0.110" | Rockwell C38 | USS Standards | 5 | 000000000 | 0000 |
| 3/8" | 0.438" | 1.000" | 0.110"-0.126" | Rockwell C38 | USS Standards | 5 | 000000000 | 0000 |
| 7/16" | 0.500" | 1.250" | 0.110"-0.126" | Rockwell C38 | USS Standards | 5 | 000000000 | 00000 |
| 1/2" | 0.563" | 1.375" | 0.156"-0.188" | Rockwell C38 | USS Standards | 1 | 000000000 | 0000 |
| 9/16" | 0.625" | 1.500" | 0.156"-0.188" | Rockwell C38 | USS Standards | 1 | 000000000 | 0000 |
| 5/8" | 0.688" | 1.750" | 0.170"-0.195" | Rockwell C38 | USS Standards | 1 | 000000000 | 0000 |
| 3/4" | 0.813" | 2.000" | 0.170"-0.195" | Rockwell C38 | USS Standards | 1 | 000000000 | 0000 |
| 7/8" | 0.938" | 2.250" | 0.235"-0.265" | Rockwell C38 | USS Standards | 1 | 000000000 | 00000 |
| 1" | 1.063" | 2.500" | 0.235"-0.265" | Rockwell C38 | USS Standards | 1 | 000000000 | 00000 |
Washers with Material Certification
These washers come with a traceable lot number and a physical and chemical test report. They’re zinc yellow-chromate plated for corrosion resistance in wet environments.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 0.281" | 0.625" | 0.051"-0.080" | Rockwell C38 | ASME B18.21.1 | 100 | 000000000 | 000000 |
| 5/16" | 0.344" | 0.688" | 0.051"-0.080" | Rockwell C38 | ASME B18.21.1 | 50 | 000000000 | 00000 |
| 3/8" | 0.406" | 0.812" | 0.051"-0.080" | Rockwell C38 | ASME B18.21.1 | 50 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.062" | 0.074"-0.121" | Rockwell C38 | ASME B18.21.1 | 25 | 000000000 | 00000 |
| 5/8" | 0.656" | 1.312" | 0.074"-0.121" | Rockwell C38 | ASME B18.21.1 | 10 | 000000000 | 00000 |
| 3/4" | 0.812" | 1.469" | 0.108"-0.160" | Rockwell C38 | ASME B18.21.1 | 10 | 000000000 | 00000 |